Signal system s ob moving vehicles



L. RIIIGER.

SIGNAL SYSTEM FOR IVLOVING VEHICLES.

APPLICATION FILED MAR. 6. 191i.

3 SHEETS-SHEET I.

In WENEN ys/w@ A ttmzl f uw 3, 1.9M?.

L. RNGEH.

SIGNAL SYSEM FOR MOWNG VEHICLE,

APPLICATION FILED MR. (5| 191?.

Vn'mlvd Jl 3 SHETSUSHEET 2.

L. RlNGER.

SIGNAL SYSTEM FOR MOVING VEHICLESl APPLICATION FILED MAR. 6. 1917.

Patented lune 3, 1919.-

3 SHEETS-SHEET 3.

ahw@

ANN

A Inventor:

wif/0 Aktiv mvumgmmxmmwmmlm iLn/AY SIGNAL CUMPANY, eene.

OF BUFEALG, NEW YGRK, .A CORPGRLTN @Fili-MI SGNAL FOR MOVNG VEHICLES.

Specification 'ofLefitei-s Patent.

nppnann inea March e, 1917. serian-no. 15e-,5:24.

.73e it known hat i, LUTHER Binnen, :i citifoi-k., have in vented ceinin new and useful ininoifcnieni in, Signal Systeme for Moving' Vehicles, of which specification. i This 'ini'cniii'ni icines io ai system of signziis iol' moving vehiciee niinpieci io Advise the opel-aten' oi! the vehicle oi' the Conditions of Sa'fey or hingen 11Min,@ ihe iolite over which the Yif'ehiolc is izi'nveiing', oi' othei conciiionn which ir nm'y he (ieniiniiiie oi convenien for hiin to knoiix :ind pni'ticnhirly vto :nich n, njvfncni in which n, phnniity of Signal .indivntions zii-o cni'iied on vthe vehicie.

There in :iiifczuijy known in the nrt a vehicie siggnmi sjveem which. eoinpi'ises hiee signals on the vehicle neinatefi hiongrh the incdinin of :in interniiieniy noting-device iiiicni in character,and cnpihie oi being mieigineci in eithei o'iwo directions o1' deenormi Lweed contini sym-em in Which iioinf ini'iicni'zions nr, obinined on the vehicle hv the ne@ of 'thi'ee con'oncii Shoes cni'ile fichi-ioni conit n;

tiinisu A.

i three iiilicnivions in The cab which :iro olii ,if Y' Y fahne nini eignzii inii anni ai piopi'izi'te elecii'ienl cennecigionsn nini byihe use oi e piu- 'miity ci' :iitei'nzting eniieni; ggeneizitoi's of different frequencies o'uside che vehicie 'for nwnziitingg; ihe devices carried by the vehicle. ihuese devices on the vehiei'e include relays of the hei-moine type, one i'einy being); provided io cmfi'esiwnd to ench aitei'netin'g cuii'ent genera-lier need. Foi the purpose of cieznn in 'ihn iei ciint-ioin ihei'e is iiilis-l tinted in ihe ncconipzinyino drawing and described in She text, five harmonic i'e'ia'ys on the vehicle iogri hei' Wii? cooperating dei'iceSi-,o coniioi six signa-is onv the' vehicle,

bui ehviouSiy ihe number 0i' i'eiziysnnfi signnis muy be viii-led without. departing imm" the principles of the inventionl deecrib'ed'i In ihe "following description thei'e is c of 4hie eppiicntion is; v to previaie foi* n ioin'ehty of the use of' o singlegcontacb shown a track contioiied System for the' vehicle signals based on diect current een tinnoue tinck circuits which are 'Weil in` the art. The' devices shawn however ,may be controlled in this manner or by\2iiteii'1 A' ing current tinck circuits or. by the ineche the ioiiowing is a nisin of en interlocking plant or hy n remote central controlled s 'sgeni orI by any oi'heil method dcen'ed o1' ziifniinhie withou ing iioin the principleo'ff this*innveintionu in the drawings there is; iihisreted n pre eired. ioi'in of appn'ntus embodying my vention, 4ihe parte being" shown leigeiy in. ciiag'i'znn for the purpose of promoting clean ness in the description, and the iliofsiiicnn-oi the parte on he vchicie being that nesuined when n clem signal has been indicated.

In the drawings, Figure l is a dingifnn matie View oi 'the devices on the vehicie, 4he

, signe] ruil being shown in secion; F Z ie a, diagram of n trackweiy divided into Six blocks, portions of two other biocis being shown; 3 is en enhn'oed deieii i'ont View of die iiai'nion'ic relay Shown 1n i;

and Fig. 4 is aside View thereof. Figa. I3 is n' front View oi: n inodiied forni of such ieiey.

Fig. 6 isla scciion on .the piane of the line 6*(5 ni Fig., 5.

The track equipment is as-oiiows: i?, 17

indicate track rails aiongiwhich the' vvehicle 1s adapted to t'fwei and which iaiis are' if vided by insninted joints 212 into'hiocke 'I designated hy the letters A, .J3 il il i?? G and H. #The equipment oi? nii Athe blocks; ie

I`identicai and the corresponding devices in each hioek :ne designated by the sisi/nie nnniherewith the lower cese ietzers of he oiphm bei'ifoiiowing ezich number to designate the perticuiar biock iefeiied to. The devices in block Wiii hedesciiihed und it will he understood that the ,devices in .ihn other hice-ks are the seme. At one end-oi' the hiock is :i tificlcbntizeiy 101e, which is connected to the miie` by the wires 1G20 and 103e. At the other end of the block is n track rainy 1034i@ K connected to the miie by he Wiies ioonnd 106e. Theielay ichns iive nenni-eiV erniw..

tm'eslOfBc, m90,- 1100, ll'c'anci 1126:, adept# ed.; when the ielziy is eneligzed, to touch contoets 1180, i145, "1160, 1180 and 1206 irespeetively. When tiie-'ieisiy 104e is dener'gjizeti7 -the aii'ifnannr-'e and HCQHM and .i127 finie-adapted 4to touch contacts 111,507 11701,' -1190 and 1210 respectiveiy. At the exit end of the block C, that is, :it ehe animi/ice io nie -tlie 59 to y respectively; the relay 9 neniber 89 eri-ying vtwo Contact springs 18S) simi ler ed lotoueli nxefl contacts 19 und 5 0 respon vor vehicle 215 :non

anti thence through tliree piitlis, fr. tlirougli 131 to the pole 'lince 168: c 'through the vilorntinir nienilier 8'? to the ning-nelle liloelisi 179 and 180. lllliien :in alternating Current 1s flowing in the coils 1.58 :tml 15S)i the mug'- netie linx 01' the core 181 :nul therefore llrev pole :faces 168 :intl l) is ulternutely renetl, Due to tlie influence of the perinatwill still be megnetizefl and will be nlterna telf; attracted and repelled by tlie pole .faces 16S and 169, :musing the member 87 to vibrate intl the Contact springs 153-1- :incl to touch the pointe 12 and res-nee tively. '.lliis only occurs lioweverlwlren the frequency of the alter. eating current fion/irre in Adie. coils 158 lund 159 is suoli. that it eorresponds to the naturel. 'period of vibration rieti in -tlie dill'erent tlie thickness varying the weight of 119 find lill), or both.

The relziys 7 87 9910 nil .11 are all :aimil'inrmonio relays; by el: Steel used or' by the magnetic bloemliir, lint reconstructed eo that @een ifesponll to ai Snlitatentizilly dilerent frequency. .For the purposes; of tliis deseription? the relay 'Y oncle to the #frequency the generator 205, tlie relay 8 to tlini of the generator lO-l, tlrr', of the generator 203, the reloj; 10 to lle/Vt olf ie generator 202., and the relay 1l. to tlnit lie Agenerator '291. The relay 8 lies a vibziting; inernlier 88 carrying two eonteet e'prings 18'? :and 188 irlieli are efleptetl when the member 88 is vibrating to toueli red contacts 11i anal il liars at ril) 'ating .and similarly adapted totoueli fixed contacts Elend i3 reepeetively; the relay 1.0 lmp vibrriting nien'ilier 90 eurryinr;l two Sprinirs 191 und 19.2 einiilurly -mlzipb tively.; and lille. relay 11 hes :t vibrating member 91 carrying two eontzict :prings 19?;

nml similarly zuluptell to touch Vfixed contacte 51 and. respeetirely.

ln order clearly to describe ille operation i et thee devia@ and the purl pluyeil liytlie.

(lille enty Circuits inl'olreil therein7 we "vill irst. :termine tiret n t'irin or vehicle ill/l is. standing; in olocl'f und tirait another train .in in bleek .A nml is npprourl.- ingl it. 'lhe trit'eli relay 104:g will lie/fleenergixetl (lue to'tlie;preneur-e of the truiu :214m its bloeit., 'and tlie consequent slim-tf' enouiting of the track buttery.

The reluyi; lil-lb, 1040, 1945.7, 104e-, :mil 104]ql will not,v new ever, be short eircuited und will ull be euergizefl. vl/'hen the velliele 215 luis moved fur .enough into the lilorl A for its eline l to contact will: tlf` e'nnl rail 19a, :i eireuit' will lie CleSetl from terminal el? the. generator cwe ,r I Y nent magnet 1li? the magnetic. blocks 1i 9 and 1 Ilieonie energized llirougjgli :i circuit ifi the member 8'?j wliiel'i period may lie vii- .emiliani lllf', armature lilla. wirr1 mutuel lll/, urumrure 10SM', wire 129k9 lion-'- van l10n@ wire 1300, Contact 1141', armature 109g.

wire 125V), eontuet '11.373, urnniture 10%.) Wire 10M, signal ruil 19u.' slioe 2li wire 59, pri-v imiry 32 of the t unsloriuer (S0, wire 53., unie ll5.\\'lieels 15, ruil ll', resistuuee Mtl/1, wires 12?@ unil 206 lo the other terminal ol the generator.' 205. The :ilternzttineA current which tliussI flows in the primary coil (S2 iw (luces nn alternating' current in tlie secondary coil Gl, thereby causing :i current to lion' in 'tile wils of :ill the relziyis l, 5L i), l() unil l1i lint. tire only relzijiv wliicli will vibrate when current ol the frequency iriver. out liy the generator `flown tlirougli its coils in tlie relay 'i'i and' sut-li vilirutionol tlie inem- .'oer 8l 01"' this relay Causes the relay nn llie iositive eide of the veliiele battery lli to the 100 :incl member 87., Contact sprin 185i nml, 1F55, contuetsi 12 and, lil.. wire 35, relay coil El, wires 131 :inilll to tlie new( :aille ofthe battery 18. 1lllllien the relay in energized, l'lie elezir Signal lump il will glow by reason of n. circuit .from the posilire side o lie buttery 15% to (lie Wire 100, contant l0, nrinuture. 30, wirelll, Signal lun "i (i nml wires 166 und 133 to the negative eine 0i. tile buttery 1S.

Alfter the Vehicle 215 luis more( 'lui' 'll tno liloeir 'il ul ruil 19a, slioo 2l. (irons, titel', Willi the terminals W v linups l5 to continue to burn :nl heretofore exiiluinetl.

Let us non' assumellizitllie velurle 2111.

le: stil! slunlling inl the blot-lr (l :nul (lie ruin 211i li is moved far enough into the kblof'lffll for itsvslioe 2l. to eonlzutivitli tile Signul ru il ifi/i. .1 eurreut' ulllylien flow lroui one ler nimul ot the generator Q04 lo tiro wires 2l() uml 122% eonturt 12ina nrniul'ure 1mg/. 'wire 1327', Contact llf'lf.) nriunlure -l l'l', wire 151e,

rind.

met. llf'n uriuuiure 101%, wire 10T/i, sie'iiul rml lil/i, shoe 21,.wire 51% primary (i2 nlz 'tlie treinstel-111er(il), wirev 553, uXle 1li, wheels 15,'-

r'uilss I7. resistirme 1254/1, und nireaA 12W) uml 20G to tlie other terniinzil ol the gener-:ttor 204. The current flowing4 in the primary coil. 62 will induee un alliez-nailing' current-.in lille' Heeoulliily coil (il oli-ille smile trimsv former, winning rurrent to l'low irl-ull the roliivrn li. l). l() unil il., lint 'u'liiel'i lumf'ever will only effect lille, remy B because et lille CIK musing the relay 21 to lie energizecl lrequene) oi' tlle current/ifi' ille generator -1- :unl illis will enlise, ille nlenlller SS oi.: suell relly lo villrae, wlliell ill 'uril jill cause llle relay to lie energized through a eireuity Jfrom the positive Side ofntlle velllee hallel'y 1&5 to tlle wileel 100 aiul 13, ille llleul bei' S8. contact springs 1ST :nul 188, Conlaets 14 and l1, ivire 92, relay ami wires 138 alli-l 133 io tlle negative sirle of ille lailtery 1S. .Vllen tlle rela1 iL` energized, lille signal lamp 5 will be eauseil loglow tlll'oug'll a circuit from ille positive side of ille billiery 1S lo ille, wires 100 and 111, colita-c1172, arillature 3?), wire 175i ligual lamp 5, wire 165 and wire 13? lo ille llegragive siile of elle lialier'y. `i'l'er the train 215 llas moved so l'lla'y tlle slloe 21 will leave ille Signal rail 10b, il will ulzllie eolliaet w'itll tlle terminals 22 :unl 23 and valise-lie relay 25 to remain energized lllrougll a circuit from the positive'side .of the huflery 11% to ille wire` 100 andV 55, eonlaei 23, slloe 21, eolli'aet 22, wires 50. 1230, and 110, arlllaure 12, eontaet 72. wire 18S). relay'fl, and wires 18S and 12123 io ille llegal'il'e side ofthe -llafl'ery 18 causing` ille ,signal lamp 5 lo continue t0 burn.

Lei us :lssunle'tllat the irain 214 yetre ulaii'l` in tlle llloek (i :unl the train 215 has 203 lo the wire@ 209 and 1215/, eontaet 119g,

arlllature 1115/, wire 1317?, e-onfact 110,, arlllature 11W, wire 130e, contact 114e, ar-

, -mz'lturev/109e, wine 12ml, Contact. 113(, arnlature 10SM, wire 107e, signal rail 19e, elloe 21, wire 59, prullary (52 of the' trallsforlllerl),

vufire 523, axle'l, wheels 15, rails 17, resist- 40 ane 1280, wires 1270 and 200 to the other terlllinal of tlle generator 203.A '1`lle,.lafl\ter hating current flowing ill the prilllary'62 of' tlle lrallsforll'ler 60 will induce an alternating current in the secondary G1 o1? the trans- `foril'leig'and will cause eurreni to flowin the eoils of all the relays l7, 8, 9, 10 andll, out

:is only the relay Q'Will respond-tothe -requency 01? the current produced by the generator 203, the vibratingmember 89 of such relay alone will vibrate; 'This Wil1 eaiisetlie relai;7 26 to v.become energized through.' acireuit 'frenl the positive side 'of the battery 1S' to' the 'Wires 10012inc1 94, member S9, eoiltaci springs 189 incl 190, eont:,l,ets 12 and 43, wire 95, relay'26 and Wires 142 anell to the negative sideo the 'battery 18, which will cause signal lamp: to ,glow through a circuit' from elle positive 4side of the train ofthe vbattery 18.- l

4ba'tery '18, to tllewreslOO and 14:5, Contact 76,"arnlature36, wirej1711, signal. lamp 4, and

wire 1611 and-'vilire 133 to thelnegativeeide .fter leaving tlleeignal rail-i190, the slloe '21 will be restored into Contact with the conw vteictpilts 22 and 2 3, and the relay 20 will le' und and the main eneririxeil through a circuit fron'l elle positive giile oi" ille llarlerjl' 1S izo the Wires 100 and 55, eoill'aet. 2?, shoe 21, Contact 22,

"wiree4 5() and 13G, 'wire' 111, arnlaure 35, conv *niet 75, wire 1' 133 '.l'l

rela)w 26 :nul wires 112 and *ro the negative suie of the battery 18. lus il, is; eeen 'lla'c elle signal lamp 1 will continue 'lo llurn :lifter leaving the Signal arllla'lure 1101/, Vwire 130i', eenraet 111;, 1li* lllalure wire 129e, contact 113e7 :irmature e, Wire 10H1, signal rail 19d, shoe 21, wire 551, prullaniY G2 of the traneformer 60,

wire 53, axle 104 wheels 15, rails 17, resistj allee 12H07, nml' il'il'ee 127 Z and 200 to the other lerlllillal o1" ille generator 202. The al ternaliiw eurrell, ilewine in ille lflriular l 02 .of the tralleilforlller ($0 will iiulure an alternating eurrelli 'lli the eeeolulary 01 of the transforu'ler, and this will eailee eurreill; co How ill the eolie; el all the relays 1, 8, E), 10 and 11, but, ae onlyv 'elle rela)Y 10 responds to t-lle freiuelle i of current wenerated b' the' generaior 202, ille illelllller il() of this rel-ly alone will vibrate, unl this wil] eause the rela); 2T lo become energized through a Cireuili frolll tlle iilosiliii'e eide of the train loat- `tery 11i lo ille wires 100 anll 90, member 90, 191 anrl192, contacts /19 and eontaelz springs 50, wire 01', relay 2i and wires 146 and 133 to the ileiraive side @if vthe battery 18. Villen vthe relay 2'? is energized, the signal lamp 3 i/glowsLqllrougll e eil-cuit frolll the positive side oi he battery 13, l'o the wires 100 and 1419,*eontael- 75), ermal'ure 39, \vire 173, sig nal lamp B and, wires 163 and '133 to the negative gifle o1 elle battery 1S. l

After leaving; ille signal railj 19d, ehe shoe 21 is again 1owerel, touching; elle eonlzaelis 22 .iey 2'!" remains energized through a, eireuii: iroill the posit-ive eide of the-train buttery El le the wires 100 and 55, Contact. eline eoiltuei; 22, wires 56 and 136, muil wire wire 11'?, relay' Y ire, 1413 3in1 133 te the iiegalfiileeiele oi elle beiiltei'y 1S. 1i; .is tllne,seen"lle` aif'e ieaviiigtlie signal rail Jelle signal lmnp eenllliuiler o burn. Le?, ne new aeeuille ilielielie trein-211 is still. bile 'bl(, e1l'"G, al'lil'ivllatipile 13min has moved far enough ini@ tllefbloel E for .its shoe 21 to rilnliaei; wili ille signa rail i'fron'l one termina-l (if elle generator 201 to the Wires 207 eine, 26g, Contact 115g,'ariml ture109`g, Wire 129;@ Contact 113f, armaliure 108/F, Wire 107e,-sgnel1rail 19e, shoe 21, Wire 59, primary 62.0f 'ifzinsormer 60, Wire 53',

g o, arililature 38, coni-110278 v.aruuiture Langes 'axle 1G, wheels 15, rails 17, resistance 128e and wires 1270 and 20G to the other 'terminal Vof the generator 201. The alternating current which is now flowing' in the priuiarj,v (i2 o1 the ranafornier 6l) induces an alternating current, in the secoudar)v (S1 ot' the said transloriner, thug` causing` current to llow vin all the relays l', 8, E), 10 and 1l, hut, as onl \v the relaxY 1l responds to alternating' current ol the frequency generated h r the geneator 201, the member 91 of the relay 1l alone will vibrate, and this will cause the relay 28 to hecoine energized through a circuit troni the positive side of the halter)v 18 to the wires lll() and Elf), member il contract springs 193 and lill. contacts 51 and 52. wire fnl. relay and wire lhto the negative Hide ol' the battory itl. When the relay 23% is energized the signal lamp EZ glows through a circuit t'roln the positive, side, ot' the batter)v 1h to the wires 100 and 15.1, contact Si?, armature '-'l-Q, wire 172, Signal lamp 2, wire 162. wire 132-3 to the nenaftire side ot the hat-ter); 1S.

,fitter leaving the signal 'ail 19e, the shoe 21 in lowered to touchA the cont-acts 22 and Q53 and theI relay reinaina energized tlnough a eireuit from the positive aide o1 the batting/18 to the wires ltlOand 55, contact 255, shoe 21, Contact 22, wires 56 and 13G, armature l1, contact 81, wire 150, relay 2S and wire 1253 to the. negative side ot' `the. hat* tery 18. lt, iS thun Seen that after leavil'lg the Signal rail 19e, the Signal lamp 2 will continuo to burn. y

\ liet un now assume that the train 211 iS stil] in the block. G and that the train 215 haS moved tar enough into the bloelt l? to bring its Shoe 21 into cont-act, with Y lail lll'. None ot the relayn l', 8, Sl, 1t) and 11 can now heeonie Veneigi'fzlul. afs thc outside eireuil'ie` broken at. the armature 10h92, All of the relays 2l, 25, :26, 2T andyw'illhecome delinergized as their holding circuitol are hrolqen dueto they raising` ot' the shoe, 21. hy the signal rail 1S);E land the conaequent lneaking;` o't its` contact 'with the Contact; points 22 and 233. When the relays '24,' Ql, 2T and 2S are deenergixed, the (langer signal lamp l glows through a circuit,- from the. positive side ot the battery 1S to the wir/e51 l0() and llT, contact T1., arn'iature 31, 'wirev 155,. armature l, Contact ,74, wire, 151, 23's', contact TT, wire, 153, armature ill), contac 40, wire 152, armature :13, eontact 83 wire 171, signal lamp l, wire 161, and wire 133:3 to theI negative side 18. Upon leaving` vthe ,signal lail 197, the langer Signal 1 will continue to burn ns all the relays 24, 25, 2li, 27 and Qjwill remain denei gized lin liiggl yand (3 there is Shown a modified vforni ot thcf vibrating;- relay. 1n these two views the parte which 4are `nunuhered the saine. an the parts in VEN 2l and '-1 arel nlen- "tical in eoi'istrnction e,1.in ;tunetion, hat, iin--v ot' the-battery attached to the right end and the ines'nliie 288 to the le'lity end there-mt. l`he rane, tall mounted so that it. i tree to ri'orate in a sali t of a permanent, L. 1 T280 whieh iu attached to a bracket hy a nerew Zit), the hlaeliet heingij attached lo the pernrainint 'i la the magnet, lli? in' il e nei-ew l,

hers fill? and Lltlfl z re nnfehan'ieally conne/eti at three point, Vir/1., at the lugs; lli and .lh at the magnetic hloele,` Utl and 1210., nd e i the- 'ane 281, it. if; evident lthat a vihrzuiing,` meinher is thus formed whose vihrationn cause the vane Lol, 'to he moved rapidly to and fro in the lield ot the nniggiiet. i380. ll'yhen this` rilnation ia takingl place., an alternating current will he net, up in the rane 281 which will he. collected h5" the inemherev 2ST and '.Zhl, n'hieh nieinlnn; aril by wires BSH) and :91 to a eoil which responds to auch' alternating current., 'This coil is 1part ot a niodilied relay i coinnriaing two coils 292 and 2513, the eoil 9:2 :uiting as the ok erating1j coil o'l the, relay, reniionsire to an alternating' current;1 and the eoil 29? acting as a holding` eoil of t relay., sponsire to a .lirect current. Y will theifef fore he olovioue3 that the inodilied conenriur4 tion of relay eould he bathe i y device orizeiinxll)v den rihed without altering; the gene 'al inode of operation ot the apparatus.

l elaiin 1. The'combination with a traeliwajg ot vehicle adapted to travel lhereoili, more til three signals carried on the. vvehielig a :an-ieee `ot' Signal raila` arranged along the traeliivay,

lneans inolu'ding a contant ahoe jlior electrically energizing the signal raila in dill'ereut ways, ooniprisingg alternating` current grenerators of suhntantially dilterent trtutnieneiee, and means for iinlependinill \7 operi ting); the

.Signale corresponding to the dillereut. wajfa in which the Signal railry hare heen euer gized, a dang' means eoi'ihroi'lefl contart hahoe, for cnergizing the (lange signal when the. teh: ele passes a delnorggized rail.

rThe combination with a traeltway, ot

a vehieleadapted to more thereon, more than three signale carried on the \fehicla, a

series ot Signal-rails; arrauggfnul alone` 'the traclzway, ineans lior eleetricall V enel-g the Signal ailS in tlitl'ierent wr compri i alternaling currenty generator., ot Hulman -tial jv dill'erent. 't'reluuincien, and ineanr-i for indelnendi-intl)v one y 'n.533 the ualA come enontling to e in which the ditl'erent wa;

al t achei l on the whit-le and 'i lie-ing y liao tu'led lor the Athe Signal 'ails have been energized, including a shoe carried by thc ychirleaaml adapted to contact with each signal rail as 'the vehicle passes the same, a danger signal 5 0n the Yehicle'and means controlled by the contact shoe for.energizingthedanger signal .When the vehicle passes'a tlenergizcd rail. 3. In combination, 'a railway, a tra-in adapted to be .moved thereon, more than three signals on the 'ti'aim'a series oi signal I IailS arranged along the railway, alternatg ingcur'rent generators of substantially ditferent ,frequencies for energizing the signal rails, means for independently operating the si' n'als corresponding 4to the dit'erent kinds ofg current supplied' thereto, including a sing'le shoe ca rrled by the 'vehicle and adapted tocontact-iwith the signal railsin succession, vand meanson the vehicle for automatically maintaining'any particular signal in operation after such shoe has ceased to contact with theuparticular signalirail,from 4which -Sftd signal receivedvtlre current by which di? Was originallyactuated, a danger signal contact. shoe for energizing the danger signal when the rail. v y .i

4:.The combination with atraclnvay, of a vel1 icle adapted, to travel thereon, more Ithan three signals carried on the vehicle, a series of signal .rails arranged along the trackway, means for electrically energizing -the signal rails in different-ways comprising alternating-current 'generators' of substantiallydifferent frequencies, means for *,denergizing the' railsv and means for'V opelIn to the, Way ,in which the vsignal rail being on the vehicleand means controlled -by'the Icontactshoe' :tor energizing. the -rtanger sig nal-When the vehicle passes a deenergized 'rail'.v

' avehicle adapted t0 travel" thereon, more' has been energized,.said means including a carried by the vehicleand. adapted to' contact with the vsignal rails, and devices on the flvehhi'cle including a series ofharmonic vD11-the vehicle and means controlled by theA vehicle passes v'a deenrgized passed has` been energized, adangersignal trackway, means for electricall) energizing.

Wayin which the Signal rail being passed relays, adanger signal on the vehicle and 6 means controlled by the contact shoe for energizing the danger signal when the Yehicle passes a deiincrgized rail. v Y.,

The combination with a-trackway, of v a vehicle adapted' to travel thereon, more G5 vthan three signals carried on the vehicle, a "series ol signal rails arranged along the trackway,.means including a contact shoe tor electrically energizing the signal rails in dit'lefrent Ways comprising alternating current generators oi: .substantially ldiii'ercnt frequencies, and means for independently operating the signals corresponding 'to the diti'crent ways inu'liich the signalrails have been -cncrgized, including a sericsoi har- `monic relays on the \ehicle each relay responding to an alternating current ol" one frequency only, and further means t'o'r maintaining-anyY signal on the vehicle in' opera tion after the electricalvencrgizat ion through 80 the signal rail has ceased, a dangersignal on -thcwrehiclc and means controllctlby the.v contact shoe tor energizing the danger sig! -nal lwhen the rchiclepasscs a dciincrgized rail.

7. The coliihiiiation \`\'ith a traclcu'ay, of

a yehicIc, a plurality ot' signals thereon, a series ol' signal rails arranged along the tracknay, alternating'current generators of substantially ditl'ercnt fretpl'cncics for energizing the signal-rails, means for operating the signals Acorresl-)omling to the ditlerent nays in which the railstare el'icrgized, and means t'or 'deiinergizing the signal rails whereby through the same means a yet dit` u .95 ferent signal is operated. l H. .The combination with a railway, oi" a. train, a plurality of signals on the train, signal rails arranged along the tra'cliway, alternating,current generators of substan# tially different frequencies forenergizing the signal rails, means for operating the signals corresponding to theitflitl'erent ways in which the signal rails' are energized, means Yt'or deiinergizingthe signal rails wherebyl a 1,05 yet di'tlercnt 'signal is operated,A and further i v meanst'or maintaining any signal set in operation by the means mentioned until-the ,signal operating means is acted upon g ll-irough a signal rail in a different condition 110 ol' encrgiza'tzion.

ln testimony whereof l ail'ix my signature in presence of two Witnesses. v

1 LUTHER RNGER. i

VVitnesSes: I 1

C. lt, Cna'rrncnn, ANNA C. 

